14 PNEG-1738 15'-135' “X” Series Roof Stairs, Peak and Manway Guard
4. Assembly Instructions
“X” Series Roof Stairs
“X” Series Roof Stairs - Quantity of Stair Sections
The chart above shows the number of each roof stair section required to fit the roof of a bin.
Diameter Bottom 3 Step 3 Step Section 4 Step Section
15' 1 1 0
18' 1 0 1
21' 1 2 0
24' 1 0 2
27' 1 3 0
30' 1 3 0
36' 1 4 0
42' 1 4 1
48' 1 6 0
54' 1 5 1
60' 1 6 1
72' 1 6 2
75' 1 9 0
78' 1 7 2
90' 1 9 2
105'1131
135' 1 17 0
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